package com.itheima;


public class TestLambda {
    public static void main(String[] args) {
        testD();
    }
    public static void testD(){
        D d1 = new D() {


            @Override
            public int max(int a, int b) {
                return Math.max(a, b);
            }
        };

        D d2 = (a, b) -> a > b ? a : b;

        D d3 = Math::max;
        int max = d3.max(1, 2);
        System.out.println(max);
    }


    public static void testC() {
        C c1 = new C() {
            @Override
            public String show(String name) {
                return "name = " + name;
            }
        };
        C c2 = name-> "name = " + name;

        C c3 = TestLambda::show4;

        String result = c3.show("张显波");
        System.out.println(result);

    }

    public static String show4(String name){
        return "name = " + name;
    }


    public static void testB() {
        B b1 = new B() {
            @Override
            public void show(String name) {
                System.out.println(name);
            }
        };

        B b2 = name -> System.out.println(name);

        B b3 = System.out::println;
        b3.show("李明同学");

    }

    public static void testA() {
        A a1 = new A() {
            @Override
            public void show(String name, int age) {
                System.out.println(name + "," + age);
            }
        };
        A a2 = (name, age) -> System.out.println(name + "," + age);
        a2.show("张三", 18);

        A a3 = TestLambda::show2;
        a3.show("李四", 20);

        TestLambda testLambda = new TestLambda();
        A a4 = testLambda::show3;
        a4.show("王五", 35);

    }

    public static void show2(String name, int age) {
        System.out.println("show2:" + name + "," + age);
    }

    public void show3(String name, int age) {
        System.out.println("show2:" + name + "," + age);
    }


}

